xtremerat | 5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691

General

Target

5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe
Size

558KB
MD5

b1d86a3bbac67a44086df9c90fe30700
SHA1

a378e1713b2a5ace554c9b29e622a49c52161931
SHA256

5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691
SHA512

a96fb52241f0ddd4c2fedfc67ed5b645c7730cc1e3cc842139bf1094b37dca9f45f67f0e823e81748f75f59d96c8cedd9e392685cee0e7dacb500d1cfeb6be4f
SSDEEP

6144:OwW8yO1I3FODqRQ290R0++gQaCJFF8DipytmjRXI1ODsGT0D5q+LtlmzyupgOwKi:pyZ3FZG++pDvtSsg01vazrpgOw

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

dominiocrossfire.duckdns.org

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/1356-1-0x0000000010000000-0x000000001016B000-memory.dmp	family_xtremerat
behavioral2/memory/1356-4-0x0000000010000000-0x000000001016B000-memory.dmp	family_xtremerat
behavioral2/memory/3764-5-0x0000000010000000-0x000000001016B000-memory.dmp	family_xtremerat
behavioral2/memory/3764-16-0x0000000010000000-0x000000001016B000-memory.dmp	family_xtremerat

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat
Xtremerat family
xtremerat

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{TDEE8C81-PC67-AWEH-NYH2-7815C83G3LA7}	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{TDEE8C81-PC67-AWEH-NYH2-7815C83G3LA7}\StubPath = "C:\\Windows\\system32\\Windows\\taskhost.exe restart"	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Windows\\system32\\Windows\\taskhost.exe"	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Windows\\system32\\Windows\\taskhost.exe"	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Windows\taskhost.exe	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe
File opened for modification	C:\Windows\SysWOW64\Windows\	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe
File opened for modification	C:\Windows\SysWOW64\Windows\taskhost.exe	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3764-0-0x0000000010000000-0x000000001016B000-memory.dmp	upx
behavioral2/memory/1356-1-0x0000000010000000-0x000000001016B000-memory.dmp	upx
behavioral2/memory/1356-4-0x0000000010000000-0x000000001016B000-memory.dmp	upx
behavioral2/memory/3764-5-0x0000000010000000-0x000000001016B000-memory.dmp	upx
behavioral2/memory/3764-16-0x0000000010000000-0x000000001016B000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2776	1356	WerFault.exe	83
4744	1356	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3764	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 1356	3764	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe	83
PID 3764 wrote to memory of 1356	3764	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe	83
PID 3764 wrote to memory of 1356	3764	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe	83
PID 3764 wrote to memory of 1356	3764	5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe	83

C:\Users\Admin\AppData\Local\Temp\5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe
"C:\Users\Admin\AppData\Local\Temp\5449cfd2164d003115510ac61daf3243cf97db21d677d5a3144a77c5572d3691.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3764
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1356
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1356 -s 480
    3⤵
    - Program crash
    PID:2776
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1356 -s 500
    3⤵
    - Program crash
    PID:4744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1356 -ip 1356
1⤵
PID:3056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1356 -ip 1356
1⤵
PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1356-1-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download
memory/1356-4-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download
memory/3764-0-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download
memory/3764-5-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download
memory/3764-16-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads